When two boats share the same hull type — in this case both the South Bay 720CR TT 2009 and the South Bay 725CR TT 2010 are pontoon designs with aluminum construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

Size is the most obvious dividing line here. The South Bay 725CR TT 2010 measures 27,8 feet overall (2010), giving it roughly 5,8 additional feet of deck space compared to the South Bay 720CR TT 2009 at 22,0 feet (2009). Weight tells a clearer story for trailering families: the South Bay 725CR TT 2010 tips the scales at 287 lbs — 265 lbs less than the South Bay 720CR TT 2009 at 22 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

The power gap is worth calling out. Rated to 300 hp, the South Bay 725CR TT 2010 has a 125-hp advantage over the South Bay 720CR TT 2009's 175-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 31 gal and 31 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The South Bay 725CR TT 2010 is rated for 17 passengers, while the South Bay 720CR TT 2009 caps at 13. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the South Bay 725CR TT 2010 could be the deciding factor.

Both are 3-tube and 2-tube pontoon designs respectively. Tube diameter and gauge affect stability and load capacity — more so than most buyers realize when comparing on paper.